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DOAS measurements of reactive halogen species at two different measurement sites in Carna, Ireland

DOAS measurements of reactive halogen species at two different measurement sites in Carna, Ireland. Katja Seitz, Denis Poehler, Joelle Buxmann and Ulrich Platt IUP Heidelberg. Locations. MRI. 500 m. 7 km. 2 km. Mace Head. MRI. Ordnance Survey Ireland, Discovery Series, no.44.

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DOAS measurements of reactive halogen species at two different measurement sites in Carna, Ireland

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  1. DOAS measurements of reactive halogen species at two different measurement sites in Carna, Ireland Katja Seitz, Denis Poehler, Joelle Buxmann and Ulrich Platt IUP Heidelberg

  2. Locations MRI 500 m 7 km 2 km Mace Head MRI Ordnance Survey Ireland, Discovery Series, no.44

  3. BrO Time Series

  4. Comparison IOlong and short lightpath

  5. IO passive instruments

  6. MRI campaign summer 2007 • IO heterogenously mixed, mainly intertidal area (mixing ratios up to 30 ppt ->particle formation) • OIO/I2 below detection limit • BrO detected, also during the night (?) • Strong vertical gradient • Time Series for 5 weeks available, only IO and BrO clearly identified Mace Head Campaign summer 2007 • IO, OIO, I2 and BrO, can confirm results of earlier campaigns • Good correlation with LIF, but LIF sees higher concentrations • Also measurements of I2 and IO with CEAS, halocarbons, I atoms

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